Internal-combustion engine.



No. 855,115. PATENTED MAY 28; 1907. I P. METZLER.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED $BPT.5.1906.

n JJ a U v fwd J BY L .w 374 3% ATTORNEYS 1-50.; valve 25 is l T 't77"ur72o1iz Him/(l fty concern: i

l L'PALLM TZLER, a-sub- ,5 oftlicfllmpt or of Germany, and a resitlof Jase-vii vi'Hudson'county, State of \V J.tl" t nu e 1' 'ventetl certain new, and useln'l li iprbvemen iInternal-Combustion inatterj and thefeatures of novelty willbe 'po1nted out mthe appended claims.

Refe 'e11ee is'to be had to the accompany- I 1 r ng drawlng whlch shows a central sectional view of m improved engine.

, 1.15 the cylinder of the engine 111 which the V 0 piston 2 travels up and down, said piston 2 eing connected by a'rod 3 with a crank l of- I the sl a-itllci. Theshaft 5 is journaled-in suitable bearingsfi'secured to or forming part of the cylinder 1 andcarries the flv wheel 7 e 5 The cylinder'l is divided into two chambersS;

, and '9 the'pis'ton '2 which chambers are connected with each-other by means of a pipe 'by a spring pressed valve 13.

opening 16 whichicommunicates with the 35 pipe 10. A second valve 18' is secured to'the sten1',15 and normally prevents communiczi:

' i tion between the pipe 10' and the passage 19 .-;Whic, h leads to a small chamber 20 leading to n15 the cliamber'g oft'hecylinderl. The chainoviber 2011's closed by the valve 21, which iscar- 5 riedby a sten122, towhich stem is also fastened the disk 23:, which disk is slightly smaller in diameter' than the chamber 20. A spring 24 serves .to' keep the valve 21' in its 45tnorma1position. I

' 25isthe valve which controls the gasolene it 1. 5 1 inlet 26"; size of which inlet may be I regulated. by-Ythefneedle valve The passage- 26 leads to .a chan'aber26 1n which-the W the saidfvalve 1s 1 opened the gasolene passes'from the chamber 26 to. the small] amber 26 and through the 1 magmai i e mbu r I 1 p p is then-impossible forthe pressureofthe gasov I Specification of Letters.fPaitexit. I pp i t n filed September 5,1906. Serial No.- 333,371.

Engines; of which thefollowing is a specificaprove thef'consitru'ctionof enginesof this dcscnptmnX l .\ly1nve nti on 'willbe fully described herepipe 3% enters the cylinder 1,

in er enrol H 1 7. JEREYQ11Z NEWJERSEY, ASSIGNOR or one-HALF 1T0;alULlh s,, lxll-xfsli ll QF f:BRQOKL qtareeaatgeea sa eaeta i lfatented. May 28,1967;

lener to open-said valve 25 all such pressure having a tendency'to close said valve. The valve 25 is mounted on a stem 28, surrounded'by a spring 2-9 which keeps said valve 25 in its closed position. The upper c nd 'of the stem 28 engages a projection 3U on the stem 22, which projection also serves as an abutment for one end of the spring 24;. Y

v 31 is the exhaust pipe which extends to the atmosphere and which is connected by means of a pipe 32 with a cooling chamber33. A

pipe 34 connectsthis cooling chamber 'with the interior of thecvlindcr l the object hereinafter. wall extending to the outer air and located diametrically opposite to the point where the Thepiston 2 is provided with a'chamber 36 which has dia metrically opposite openings thereof. j

Inorrler to regulate the amount of air which enters the chamber 9, through the air inlet 12-, the fly wheel 7 is provided with a. fiat ring 38 mounted on rods'39 which extend I through the-fly wheel and are screw threaded to receive nuts 40. Springs 4 1 surround said rods and have one end bearing against the fly wheel and the other end abutting against the nuts 40. 42 are weights secured to arms 43which are pivotedat 4-1, to lugs 45 on the fly wheel. The arms a3 are provided with projections 46 which extend adjacent to the-ring 38. 38 aresto'ps to limit the movement of the ring 38. l

47fare disks, preferably made elliptical in for'n i'and secured to the shaft 5 so as to turn therewith, yet being capable of. sliding on said shalt. Thedisks 47 are pressed against the walls of the lower chamber 9 by means of flat springs 48, secured to the cranks 4 and also by the ressure in the ch amber 9.

' 49 are oi wells provided with inlets 49 thus when oil is passed into the wells 49 it covers thesurface of thechamber walls which are engaged byit-he disks 47 as said disksare rotated. A tight joint is thus secured at these points and leakage is prevented, the said disks moving lengthwise of the shaft as they wear. Theelliptical shape of the chamber 49 will cause the oil to rise and fall thus insilring good lubrication.

' 50 indicates a means for producing a spark at theigniter S 82 is. a hood secured to the 'of'which will be more clearly brought out" 35 is an opening in the cylinder 7 97 in the walls upper portion of the cylinder 1, thus forming a chamber 83 which communicates with the passage 19 by means of an opening 84.

In operation an electric s ark is produced n the usual way 1n thec amber 8 which lgnites the mixture of gasolene and air contained in said chamber and causes said mix- I ture to explode. This explosion drives the piston 2 downward; as soon as the upper edge of said piston passes the openings 31' the exhaust esea es through the pipe 31'. Almost inst-ant y atmospheric 'tained in the chamber 8, an

' 18, which is mounted on the same stem with valve 14, pure air air will rush into the pas "sage 19 and will open the 'valve 21. This will at the same time open the gasolene valve.

.25 and allowgasolene to enter the chamber 20. Owing to the fact that there is very littlespace of the chamber 20, the air rushes by this disk ing the u is sucks 5 with a high velocity and carries with it the a e'rfec't mixture the rushin in of the air resulting in I air and gasolene. It is a visable to have pure air enter the chamgasoiene,

. ber 8 first to drive out the remaining exhaust ,gas'esas if a mixtureof gasolene and air were immediately introduced into said chamber 8 said mixture would be liable to' become ignited by the burnin exhaust, causing a premature ex lesion. the piston travels in the upwar direction, the valves 14 and 21 will be closed as soon as the openings 31*are covered'by the piston and'compression of the mixture takes p ace in the chamber 8. When the crank'4 reaches its upper position the compressed v mixture is again ignited and the operation just described is' repeated. Dur ward stroke of the piston 2 pure air through the inlet 12, the suction opening the valve 13, and into the chamber arms 43 on 9. This pureair is compressed on the downward stroke and driven into chamber 8, as described above. As soon as the piston has reached its lowest point and starts upward again the valve 11 is closed by suction and no air in the pipe 10, which air might still be under pressure, can be sucked into chamber 9from said ipe. I

I The reguiation of the amount of air which enters the chamber 9, is effected as follows: As the shaft 5 is rotated and with it the fly wheel. 7, the centrifugal force will cause the weights 42 to fly outward and swing the their pivot, if the speed should exceed a certain limit. This causes the projections 4G to move the ring 38 toward the .air inlet 12 so that onlyafsmall amount of air between the disk 23 and the wallscan enter the chamber 9. 7 On the next down- Ward stroke the pressure of the air in the chamber 9 and the pipe 10 will not be great enough to open the valve 18 so that only a small amount of pure air enters chamber 8 and no explosion occurs. A'throttling-action is thus obtained and the speed of the engine is reduced. With this construction no gasolene'is wasted .as would be the case it this throttling did not take place. It is to be understood that the ring 38 never contacts with the-inlet 12, in other words said inlet is never completely-closed, ,a stop 38 being provided to limit the movement of the ring 38, so that there can be no friction between the ring 3S'and the inlet 12 as the ring 38 rotates. Asthe exhaust gases rush into the pipe 31 some part of said gases will raise the check valve 32- and pass through the pipe 32 into the cooling chamber 33 where said gases will be cooled. As said gases escape under pressure therewill be some pressure in said chamber 33, so that as soon as the opening 37 registers with the opening of the pipe 34, the cooled exhaust gases will rush into the chamber 36 and out through the opposite opening 37 and through. the opening 35 into the outer air. The piston is thus e'll'ectually cooled at each stroke In order to prevent the pressure of the air in the passage 19 and the chamber from forcing gasolene along by the stem 28 of the valve 25, I provide the hood 82 which forms the chamber 33 and connect said chamber with the passage 11) by means of the opening 84; \Yith this arrangement the pressure on both sidcs of the valve is equalized and no leakage is possible. Various modifications may be made with-- out departing from the nature of my inven tion as defined in the claims.

I claim: 1. In an internal combustion engine, a cylinder having two inlet ports and an exhaustport, a piston arranged to reciprocate in said cylinder, an inlet for compressed air connected with one of the inlet ports of the cylinder, a passage leading from said compressed air inlet to the other inlet port of the cylinder, a fuel inlet connected with said passe e, a valve controlling the connection of the compressed air inlet'with said passage, anothervalve connected with the first-named valve and controlling the air inlet portof the cylinder, so that air will first enter the cylinder and then also the said passage, and an.- other inlet valve controlling the connection of said passage with the cylinder.

2. In an internal combustion engine, a cylinder having two inlet ports and an exhaust port, a piston arranged to reciprocate in said cylinder, an inlet for compressed air connected with one of the inlet ports of the cylinder, a passage leading from said compressed air inlet to the other inlet port of the cylinder, a fuel inle c nected with said passage, a

valve controlled by the second-named inlet valve, controlling the admission of fuel to said passage. I

3. In an niternal combustion engine, a cy I inder provided with two inlet ports and an exhaust port, a passage connectin the two inlet ports, a valve controlling sa-i passage,

and two inlet valves controlling the cylinder inlets, one of said inlet valves bein connected with the valve controllin sai passa e, an inlet for compressed air Ieading to t e engine between the two connected valves,- and a fuel inlet leading to said connecting passage, so that air Wlll first enter the cylinder through one of its inlets and .will then ass through the said passage and mix with fuel before entering the other inlet of the cylinder.

4. In an internal combustion engine, a cylinder having two inlet ports and an exhaust port, a valved connection between thetwo inlet ports and means for first injecting air through one of the inlet ports and then injecting a mixture of air and r'uel through the other inlet port.

5. In an internal combustion engine a cylinder having two inlet ports and an exhaustport, a passage connecting the two inlet ports, a valve controlling the admisslon of compressed air to said passage, another valve connected with the first-named valve and controlling the direct admission of compressed air to the Vllll(ll, a third valve controlling the connection of said passage with the cylinder, a fuel inlet valve controlled by said third valve to govern the admission of fuel to the said passage, and a cap forming a chamber communicating with said passage and inclosing the stems of the 'valves 'entirely, so as to equalize the pressure and prevent the escape of fuel along the valve stems.

6. In an internal combustion engine, a cylinder having two inlet ports and an exhaust port, a passage connecting the two inlet ports, a Valve controlling said passage, another valve connected with the first-named valve and controlling one of the cylinder inlets. a compressed air supply lea'iding to the engine between said valves; another valve closing the second cylinder inlet, means for supplying fuel to said passage. and a cap forming a chamber in .communication with said passage and inclosiug the valve stems entirely to )reventthe escape of fuel along the stems.

n witness whereof, I have hereunto signed any name in the presence of two subscribing witnesses. v

, PAUL BLETZLER.

Witnesses v ALEXANDER J. (.uxc'nv, GEo, BRIGHTON. 

